To provide a structure of vehicle parts that reduces weight, and exhibits high bonding power and rigidity even when twisted, pulled, bent or compressed from any directions, while having advantages in manufacturing and cost.
A steel intermediate member 11 is formed between a trailing arm 1 made of aluminium die-cast and a steal torsion beam 2. One end of the intermediate member 11 is welded to the torsion beam 2. The other end 11a is integrally cast-coated when the trailing arm 1 is die-cast molded. The intermediate member 11 is formed so that the one end is brought into internal or external contact with an end of the cylindrical torsion beam 2. A cast coating part 12 includes a linear tube part 11d extended in parallel with an axial line of the intermediate member 11, and a stepped part 11e formed at least at the end 11b of the linear tube part 11d.
SEKINE TEIHIRO
AOYAMA SHUNZO
SUGANO YASUSHI
AHRESTY CORP
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